Investigation of the structural and electrochemical properties of a ZnO–SnO<sub>2</sub> composite and its electrical properties for application in dye-sensitized solar cells

Sheikh, Arzoo; Soni, Kumavat; Brajpuriya, R.; Lakshmi, N.

doi:10.1039/d3nj00573a

Cited by 6 publications

(2 citation statements)

References 58 publications

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“…The ideal photoanode has a large surface area, high dye absorption, fast electron transfer rate, and suppressed electron recombination. TiO 2 [ 3 , 4 , 5 , 6 , 7 , 8 ], SnO 2 [ 9 , 10 , 11 , 12 , 13 ], and ZnO [ 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ] are used as photoanodes. In general, TiO 2 is used as a photoanode because it has an appropriate energy band gap, a large specific surface area, stable dye adsorption, and acts as a scattering layer leading to enhanced light harvesting.…”

Section: Introductionmentioning

confidence: 99%

Amphiphilic Graft Copolymers as Templates for the Generation of Binary Metal Oxide Mesoporous Interfacial Layers for Solid-State Photovoltaic Cells

Lim,

Jeong,

Moon

et al. 2024

Nanomaterials

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The binary metal oxide mesoporous interfacial layers (bi-MO meso IF layer) templated by a graft copolymer are synthesized between a fluorine-doped tin oxide (FTO) substrate and nanocrystalline TiO2 (nc-TiO2). Amphiphilic graft copolymers, Poly(epichlorohydrin)-graft-poly(styrene), PECH-g-PS, were used as a structure-directing agent, and the fabricated bi-MO meso IF layer exhibits good interconnectivity and high porosity. Even if the amount of ZnO in bi-MO meso IF layer increased, it was confirmed that the morphology and porosity of the bi-MO meso IF layer were well-maintained. In addtion, the bi-MO meso IF layer coated onto FTO substrates shows higher transmittance compared with a pristine FTO substrate and dense-TiO2/FTO, due to the reduced surface roughness of FTO. The overall conversion efficiency (η) of solid-state photovoltaic cells, dye-sensitized solar cells (DSSCs) fabricated with nc-TiO2 layer/bi-MO meso IF layer TZ1 used as a photoanode, reaches 5.0% at 100 mW cm−2, which is higher than that of DSSCs with an nc-TiO2 layer/dense-TiO2 layer (4.2%), resulting from enhanced light harvesting, good interconnectivity, and reduced interfacial resistance. The cell efficiency of the device did not change after 15 days, indicating that the bi-MO meso IF layer with solid-state electrolyte has improved electrode/electrolyte interface and electrochemical stability. Additionally, commercial scattering layer/nc-TiO2 layer/bi-MO meso IF layer TZ1 photoanode-fabricated solid-state photovoltaic cells (DSSCs) achieved an overall conversion efficiency (η) of 6.4% at 100 mW cm−2.

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Section: Introductionmentioning

confidence: 99%

Amphiphilic Graft Copolymers as Templates for the Generation of Binary Metal Oxide Mesoporous Interfacial Layers for Solid-State Photovoltaic Cells

Lim,

Jeong,

Moon

et al. 2024

Nanomaterials

View full text Add to dashboard Cite

show abstract

“…The ideal photoanode has a large surface area, high dye absorption, fast electron transfer rate, and suppressed electron recombination. TiO 2 [3][4][5][6][7][8], SnO 2 [9][10][11][12][13], and ZnO [14][15][16][17][18][19][20][21][22][23][24][25][26][27] are used as photoanodes. In general, TiO 2 is used as a photoanode because it has an appropriate energy band gap, a large specific surface area, stable dye adsorption, and acts as a scattering layer leading to enhanced light harvesting.…”

Section: Introductionmentioning

confidence: 99%

Amphiphilic Graft Copolymers as Templates for the Generation of Binary Metal Oxide Mesoporous Interfacial Layers for Solid State Photovoltaic Cells

Lim,

Jeong,

Moon

et al. 2024

Preprint

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The binary metal oxide mesoporous interfacial layers (bi-MO meso IF layer) templated by a graft copolymer is synthesized between a fluorine-doped tin oxide (FTO) substrate and nanocrystalline TiO2 (nc-TiO2). Amphiphilic graft copolymers, Poly(epichlorohydrin)-graft-poly(styrene), PECH-g-PS, was used as a structure-directing agent, and the fabricated bi-MO meso IF layer exhibits good interconnectivity and high porosity. Even if the amount of ZnO in bi-MO meso IF layer increased, it was confirmed that the morphology and porosity of bi-MO meso IF layer was well maintained. In addtion, bi-MO meso IF layer coated onto FTO substrates show higher transmittance compared with a pristine FTO substrate and dense-TiO2/FTO, due to the reduced surface roughness of FTO. The overall conversion efficiency (η) of a solid state photovoltaic cells, dye-sensitized solar cell (DSSC) fabricated with nc-TiO2 layer/bi-MO meso IF layer TZ1 used as a photoanode reaches 5.0% at 100 mW cm-2, which is higher than that of DSSC with a nc-TiO2 layer/dense-TiO2 layer (4.2%), resulting from enhanced light harvesting, good interconnectivity, and reduced interfacial resistance. The cell efficiency of the device did not change after 15 days, indicating that the bi-MO meso IF layer with solid-state electrolyte has improved electrode/electrolyte interface and electrochemical stability. Additionally, commercial scattering layer/nc-TiO2 layer/bi-MO meso IF layer TZ1 photoanode fabricated solid state photovoltaic cells (DSSC) achieved an overall conversion efficiency (η) of 6.4% at 100 mW cm-2.

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Top‐Down Fabrication of N‐GQDs Modified SnO₂ with Improved Photoelectric Characteristics

Zhang,

Feng,

Wang

et al. 2024

Part & Part Syst Charact

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N‐graphene quantum dots (N‐GQDs) are prepared using graphite as a carbon source and ammonia as a nitrogen source by a top‐down approach, and further combined with SnO2 to obtain SnO2/N‐GQDs composites by a hydrothermal method. SnO2/N‐GQDs composites are analyzed by morphology and structure characterization, and the composites with different N‐GQDs content are further investigated by instantaneous photocurrent response (I‐t), electrochemical impedance (EIS), linear scanning voltammetry (LSV), and Mott‐Schottky curves (MS). SnO2/N‐GQDs composites exhibit an obvious increment in photocurrent and a decrement in interface charge transfer impedance. When the addition of N‐GQDs is 1.5wt.%, the I‐t value of SnO2/N‐GQDs reaches the optimum of 3.84 × 10−5 A cm−2, which is 2.3 times as large as that of SnO2. Meantime, the carrier density of SnO2/N‐GQDs reaches 2.67 × 1021cm−3, which is 1.5 times as high as that of SnO2. The improvement is attributed to the combination of SnO2 and N‐GQDs, which promotes more charge carriers to be generated and transported under UV irradiation.

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Investigation of the structural and electrochemical properties of a ZnO–SnO₂ composite and its electrical properties for application in dye-sensitized solar cells

Abstract: This study compares photovoltaic and electrochemical properties of nano sized ZnO–SnO2 composite as photoanode material made by a simple but effective mechanical mixing method with Ru N719 dye for energy harvesting applications in DSSCs.

Cited by 6 publications

References 58 publications

Amphiphilic Graft Copolymers as Templates for the Generation of Binary Metal Oxide Mesoporous Interfacial Layers for Solid-State Photovoltaic Cells

Amphiphilic Graft Copolymers as Templates for the Generation of Binary Metal Oxide Mesoporous Interfacial Layers for Solid-State Photovoltaic Cells

Amphiphilic Graft Copolymers as Templates for the Generation of Binary Metal Oxide Mesoporous Interfacial Layers for Solid State Photovoltaic Cells

Top‐Down Fabrication of N‐GQDs Modified SnO₂ with Improved Photoelectric Characteristics

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Investigation of the structural and electrochemical properties of a ZnO–SnO2 composite and its electrical properties for application in dye-sensitized solar cells

Abstract: This study compares photovoltaic and electrochemical properties of nano sized ZnO–SnO2 composite as photoanode material made by a simple but effective mechanical mixing method with Ru N719 dye for energy harvesting applications in DSSCs.

Cited by 6 publications

References 58 publications

Amphiphilic Graft Copolymers as Templates for the Generation of Binary Metal Oxide Mesoporous Interfacial Layers for Solid-State Photovoltaic Cells

Amphiphilic Graft Copolymers as Templates for the Generation of Binary Metal Oxide Mesoporous Interfacial Layers for Solid-State Photovoltaic Cells

Amphiphilic Graft Copolymers as Templates for the Generation of Binary Metal Oxide Mesoporous Interfacial Layers for Solid State Photovoltaic Cells

Top‐Down Fabrication of N‐GQDs Modified SnO2 with Improved Photoelectric Characteristics

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Investigation of the structural and electrochemical properties of a ZnO–SnO₂ composite and its electrical properties for application in dye-sensitized solar cells

Top‐Down Fabrication of N‐GQDs Modified SnO₂ with Improved Photoelectric Characteristics